The Yale 85 series deadlocking standard nightlatch securitylocks are some of the most widely-used front door latches.They are key operated from the outside and lever handleoperated from the inside. The latch automatically deadlocks onclosing the door and the snib function (bolt hold back button)enables the latch to be held back.

The inside handle can also be deadlocked by a reverse turn ofthe key in the cylinder giving additional security (when deadlockedin this manner the latch cannot be opened from the inside only fromthe outside with the key)

Supplied with 1109 Cylnder in brass.

The 85 series security nightlatches have a 40mm backset,this is the measurement from the edge of the door to the centre ofthe keyhole. Locks with a 40mm backset are normally used wherethere is restricted space, such as on a narrow glass panelleddoor.